Radial cleavage - metazoa, Biology

Assignment Help:

Radial cleavage - Metazoa

Radial cleavage produces tiers or layers of cells one on top of another. Radial cleavage is also said to be indeterminate or regulative because each of the blastomeres of the early embryo, if separated from the other, can regulate its development and form a complete well proportioned embryo. This happens because the blastomeres are equipotent; their final fate is not yet determined and there is no definite relation between the position of early blastomeres and specific tissue it will form in the embryo (hence indeterminate). This type of cleavage is found in some cnidarianes, echinoderms and all chordates.

1560_Radial cleavage - Metazoa.png

Figure: Radial cleavage shown at 4, 8 and 16 cell stage


Related Discussions:- Radial cleavage - metazoa

Uses of grafting, Uses of Grafting Grafting helps to preserve and pe...

Uses of Grafting Grafting helps to preserve and perpetuate varieties that cannot reproduce by vegetative method. Grafting changes less useful varieties to more desirable

What is the evolutionary importance of pteridophytes, What is the evolution...

What is the evolutionary importance of pteridophytes? As the first tracheophytes, pteridophytes were also the first plants to extensively colonize the terrestrial environment f

Criteria for diagnosis of respiratory failure, Criteria for Diagnosis of Re...

Criteria for Diagnosis of Respiratory Failure PaO 2 , PaCO 2 , > 50 mm Hg.  Vital Capacity Respiration > 30/min or below 8/min.

Periodicity - qualitative characters, Periodicity (Phenology, Aspection) ...

Periodicity (Phenology, Aspection) It refers to the study of seasonal changes in the community, that is, the periodic phenomena of organisms in relation to their climate. Peri

basic phases of pcr, What are three basic phases of PCR?  Which phase of t...

What are three basic phases of PCR?  Which phase of these three phases is used for analysis for the end-point PCR? Why? Which phase is used for analysis for the quantitative real-t

Set up of phototherapy unit, Set Up of Phototherapy Unit Phototherapy ...

Set Up of Phototherapy Unit Phototherapy generally consists of four to eight cool white, day bright, or special blue fluroescent tube lights covered by a plastic shield and p

How is the circulatory system of reptiles characterized, Q. How is the circ...

Q. How is the circulatory system of reptiles characterized? What is the basic difference between the amphibian and the reptile heart? The circulatory system of beings of the cl

Explain spoilage by yeasts, Q. Explain Spoilage by yeasts? Yeasts domin...

Q. Explain Spoilage by yeasts? Yeasts dominate in the spoilage of fruit products which contain high acid content due to their ability to tolerate high acid environment. Yeast

Mycotoxicosis, M yc ot o xi c osi s There are several types of m...

M yc ot o xi c osi s There are several types of mycotoxins (toxins produced by the fungi) e.g. aflatoxin, ochratoxin etc. Many species of fungi produce them but Aspergi

Prokaryotes and eukaryotes, Prokaryotes and Eukaryotes By now, you kno...

Prokaryotes and Eukaryotes By now, you know that cell theory holds good for all living forms. However, if you examine under the microscope, the cells of a bacterium, a blue gr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd